What does the hood of a digital camera do?

The hood of digital camera has the functions of restraining the halo of the picture, preventing stray light from entering the lens, preventing rain and snow from splashing, and protecting the camera and lens from accidental collision.

Hood is a device installed at the front of photographic lens, digital camera and video camera to block harmful light, and it is also one of the most commonly used photographic accessories.

When we take pictures, we will be affected by the halo, and the photos we take are like a mist. In fact, this is caused by not using a range hood. The functions of the protective cover are as follows:

1. Halo is mostly used for backlight, sidelight or flash photography, and the hood can prevent non-imaging light from entering and avoid image fogging;

Second, when taking photos in the forward and side light, it can prevent the surrounding scattered light from entering the lens;

Third, when lighting photography or night photography, it can avoid the surrounding interference light from entering the lens;

Fourth, the hood can also prevent accidental damage to the lens, prevent fingers from touching the surface of the lens by mistake, and shield the lens from wind, sand, rain and snow to some extent.

Extended data

Type of hood

I. Cylindrical

Now the latest barrel hood has a patented universal hood, also called universal adapter ring, which can be used in various lenses to achieve the purpose of universal hood.

Second, petal type

Generally, the hood of wide-angle lens is petal-shaped, that is, it protrudes up and down longer and has shorter sides. This is because the wide-angle lens has a large viewing angle and the camera negative or photosensitive element is rectangular.

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